| area | (noun) a part of a structure having some specific characteristic or function | - |
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| (noun) the extent of a 2-dimensional surface enclosed within a boundary | Synonyms: expanse, surface area |
| (noun) a part of an animal that has a special function or is supplied by a given artery or nerve | Synonyms: region |
| (noun) a subject of study | - |
| (noun) a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography) | Synonyms: country |
| (noun) a particular environment or walk of life | Synonyms: arena, domain, field, orbit, sphere |